Belum Caves is one of the most popular tourist attractions located near Tadipatri and is known as the longest natural underground cave system in India. The caves contain beautiful rock formations, long tunnels, natural chambers, and underground pathways that attract thousands of visitors every year. Tourists enjoy exploring the mysterious cave interiors, which are illuminated with modern lighting facilities for safety and sightseeing. The caves have historical and geological importance and were once used by Buddhist monks for meditation. Visitors can also see unique formations such as the “Patalaganga” underground water stream and naturally formed Shiva Lingam structures. The Andhra Pradesh Tourism Department developed the caves with walking paths and ventilation systems to improve tourism facilities. Belum Caves is considered one of the best adventure and geological tourism destinations near Tadipatr